scholarly journals Early Byzantine metallurgical object at the site Gamzigrad - Romuliana in Eastern Serbia

2009 ◽  
Vol 45 (2) ◽  
pp. 197-206
Author(s):  
Maja Zivic
Keyword(s):  
Chemical Analysis ◽  
Environmental Pollution ◽  
Steel Production ◽  
Electric Arc ◽  
Technological Scheme ◽  
Detailed Characterization ◽  
Electric Arc Furnaces ◽  
Valuable Source ◽  
Arc Furnaces

The processing of waste powders from steel production in electric arc furnaces is a world problem. The presence of Fe, Zn, Cd, Pb, etc. in the powders makes them a valuable source for these metals. Zinc is the metal that is most often utilized, which leads to reduction of environmental pollution. The greatest problem in this connection is the presence of chlorine and fluorine in the powders, which influences the electroextraction of zinc in a significantly negative way. The presented paper shows the results from the study of the possibilities for zinc leaching from powders obtained in the steel production in Bulgaria. A detailed characterization of the powders was made using chemical analysis, XRD, DTA and TGA and M?ssbauer spectroscopy. The results from the powder leaching with different solvents give the reason to recommend a technological scheme for the complete and total processing of the waste powders from steel production.

scholarly journals Utilization of zinc in powders from electric arc furnaces in steel production

2009 ◽  
Vol 45 (1) ◽  
pp. 15-22 ◽  
Author(s):  
B.S. Boyanov ◽  
T.B. Baev
Keyword(s):  
Chemical Analysis ◽  
Environmental Pollution ◽  
Steel Production ◽  
Electric Arc ◽  
Technological Scheme ◽  
Detailed Characterization ◽  
Electric Arc Furnaces ◽  
Valuable Source ◽  
Arc Furnaces

The processing of waste powders from steel production in electric arc furnaces is a world problem. The presence of Fe, Zn, Cd, Pb, etc. in the powders makes them a valuable source for these metals. Zinc is the metal that is most often utilized, which leads to reduction of environmental pollution. The greatest problem in this connection is the presence of chlorine and fluorine in the powders, which influences the electroextraction of zinc in a significantly negative way. The presented paper shows the results from the study of the possibilities for zinc leaching from powders obtained in the steel production in Bulgaria. A detailed characterization of the powders was made using chemical analysis, XRD, DTA and TGA and M?sbauer spectroscopy. The results from the powder leaching with different solvents give the reason to recommend a technological scheme for the complete and total processing of the waste powders from steel production.

scholarly journals Plant Treatments of EAF Slag for its Use as Construction Materials

2013 ◽  
Vol 750-752 ◽  
pp. 1244-1253
Author(s):  
Qi Xing Yang ◽  
Björn Haase ◽  
Feng Lan Han ◽  
An Jun Xu ◽  
Fredrik Engström ◽  
...  
Keyword(s):  
Construction Materials ◽  
Steel Production ◽  
Electric Arc ◽  
Steel Plant ◽  
Production Rates ◽  
Electric Arc Furnaces ◽  
Arc Furnaces ◽  
Steel Grades ◽  
Eaf Slag ◽  
Test Operations

At the steel plant of Höganäs Sweden AB, different steel grades were produced using an Electric Arc Furnaces (EAF). The slag tapped by the EAF often disintegrated during cooling. Slag fines from the disintegration are difficult to handle and to use as materials in construction. The plant tests of EAF slag treatments using stabilizer MCP-F of high P2O5 content were thus conducted, with 1st and 2nd campaign adding 10 and 20 kg MCP-F/ton slag, respectively. The MCP-F addition in slag pots and other test operations were carried out smoothly, without impacting the EAF steel production. Rates P2O5 recovery in the EAF slag were lower in some test heats. Studies may thus be carried out in future to increase the P2O5 recovery from MCP-F, hence, achieving a higher efficiency of stabilization treatments for the slag from the EAF plant.

scholarly journals Study Regarding the Factors Influencing the Dynamics of Solid Waste in the Steelmaking Process

2012 ◽  
Vol 69 (2) ◽  
Author(s):  
Dana Adriana ILUÅ¢IU – VARVARA ◽  
Elena Maria PICÄ‚ ◽  
Liviu BRá‚NDUȘAN
Keyword(s):  
Solid Waste ◽  
Steel Production ◽  
Electric Arc ◽  
Waste Generation ◽  
Steelmaking Process ◽  
Electric Arc Furnaces ◽  
Arc Furnaces ◽  
Factors Influencing ◽  
Solid Waste Generation ◽  
Main Factors

Knowing the factors that determine the dynamics of solid waste generation is very important because it provides clues about possible alternatives to reduce the quantities of generated waste. The purpose of this paper is to identify the factors that affect t he dynamics of solid wastes generation in the steelmaking process in electric arc furnaces. Fig. 1 presents the main factors influencing the dynamics of solid waste generation during steelmaking in electric arc furnaces. The annual steel production is the factor that has the greatest influence on the dynamics of solid waste from steelmaking in electric arc furnaces. If the annual production of steel is higher, the quantities of solid waste generated will be higher.

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